JPS5930207Y2 - Synthetic resin air cleaner gasket fixing structure - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a gasket fixing structure for a synthetic resin air cleaner.

Conventionally, in air cleaners made of synthetic resin such as polypropylene resin, there is a seal at the connection port of the case where the external hose is inserted and connected, and a seal is installed to block the transmission of vibration from the case side to the vehicle body side where the external hose is integrated. In order to
The gasket is attached with adhesive.

However, when an external hose is inserted into a connection port to which such a gasket is attached, there is a problem in that a force that peels off the gasket acts in the insertion direction, making it easy for the gasket to peel off from the connection port. .

This invention was devised in view of the above-mentioned conventional problems, and an object of the present invention is to provide a gasket fixing structure for a synthetic resin air cleaner that can reliably fix and hold the gasket with a simple structure.

In order to achieve the above object, this invention provides a gasket fixing structure for a synthetic resin air cleaner in which a gasket is fixed to a connection port of a synthetic resin air cleaner case into which an external hose is inserted and connected. is pressed against the end of the retaining mouth, and the locking claw part flanked by the outer circumferential tongue of the clamp is engaged with the engagement groove formed on the case side, and the gasket is pressed by the ring-shaped holding part of the clamp. It is designed to maintain the state.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

FIGS. 1 and 2 are explanatory diagrams showing one embodiment of a gasket fixing structure for a synthetic resin air cleaner according to this invention.

An air purifying element 3 is inserted between a cap 1 molded from a synthetic resin such as polypropylene resin and a case 2, and the cap 1 and case 2 are integrated by tightening a connecting fitting 4.

An air cleaner nose 1A is integrally formed on the cap 1.

A connection port 5 is opened in the case 2, and an inlet hose 6 for sucking air can be inserted and connected to the continuation port 5.

Air is sucked in from one air cleaner nose, passes through the element 3, passes through the inlet hose 6, and is supplied to an intake pipe (not shown).

A protruding edge 2A is formed protrudingly on the case 2 around the connection port 5, and a fixed portion 7A of the gasket 7 is covered with the protruding edge 2A as shown in FIGS. 3 and 4. The inner circumferential portion of the gasket I extends in a tapered shape toward the center of the connection port 5, and serves as a seal portion γB that tightly contacts the outer circumferential portion of the inlet hose 6 to be inserted.

Gasket (covered on the protruding edge 2A of the case 2) 7
The entire front circumference of the fixed part 7A is pressed against the protruding edge 2A of the case 2 by a ring-shaped holding part 8A of a clamp 8 made of spring steel and having a C-shaped cross section as shown in FIG. It is meant to be retained.

Here, at a plurality of positions (three positions in FIG. 5) on the outer periphery of the ring-shaped holding part 8A of the clamp 8, tongue pieces 8B having a slanted cross section are protruded outward, and each tongue piece Two sides of a triangle are notched in the center of the hanging leg of the portion 8B, and a locking claw portion 8C is formed which expands upward and outward from the lower end of the hanging leg.

Three sets of inner wall portions 2B and outer wall portions 2C are protruded from three positions on the side of the outer circumferential side of the connecting port 5 of the case 2, and a width L1 is maintained between each inner wall portion 2B and outer wall portion 2C. A groove portion 2D is formed.

Therefore, the locking claw part 8C of the clamp 8 is inserted into the engagement groove part 2DK, and the fixed part 7A of the gasket I is suppressed by the protruding edge 2AK of the case 2 by the holding part 8AK.

When the gasket (gasket) 7 is completely pressed by the holding part 8A of the clamp 8, the locking claw part 8C with the expansion height L2 in the free state engages the engagement groove part 2 by its own spring force.
It bites into the wall resin of the outer wall portion 2C forming the part D, and the clamp 8 can be firmly fixed in the detachment direction.

That is, the fixed portion 7A of the gasket I is pressed by the holding portion 8A of the clamp 8 on the protruding edge 2A around the connection port provided in the case 2 of the air cleaner, and the corrected state is determined by the locking claw of the clamp 8. Since this is ensured by the engagement between the portion 8C and the wall surface of the engagement groove portion 2D of the case 2, even when the inlet hose 6 applies insertion force to the gasket I, the gasket 7 does not separate from the protruding edge portion 2A. , seal portion 7 between inlet hose 6 and gasket 7
A stable state of contact with B is ensured.

That is, according to the above embodiment, the locking claw portion 8 of the clamp 8
The clamp 8 is engaged with the case 2 side by the spring force C, and the gasket 7 can be reliably fixed and held around the connection port of the case 2 by the holding portion 8A.

Further, the mold structure used in manufacturing this air cleaner case does not require the formation of an undercut structure for locking the clamp, and has an extremely simple shape.

As mentioned above, this invention is a synthetic resin air cleaner gasket structure in which the gasket is fixed to the connection port of the synthetic resin air cleaner case into which an external hose is inserted and connected. VCf on the outer circumferential side of the clamp.
The locking pawl that can be pressed engages with the engagement groove formed on the case side to maintain the gasket suppressed state by the ring-shaped holding part of the clamp, so the gasket is securely fixed with a simple structure. It has the effect of being able to be retained.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing one embodiment of the gasket fixing structure for a synthetic resin air cleaner according to this invention, Fig. 2 is a side view of the same, and Fig. 3 is an enlarged view of the main parts along the line ■-■ in Fig. 2. 4 is an enlarged sectional view of a main part taken along the line IV--IV in FIG. 2, and FIG. 5 is an enlarged perspective view showing the clamp in the same embodiment. 2...Case, 2D...Engagement groove, 5
... Connection port, 6 ... Inlet hose, γ ... Gasket, 7A ... Fixed part, 7B ... Seal sound doctor 8 ... Clamp, 8A ... Holding part, 8B ... Tongue part, 8C ... Locking claw part.

Claims (1)

[Scope of utility model registration request] In the gasket fixing structure of a synthetic resin air cleaner that fixes a gasket to the connection port of a synthetic resin air cleaner case into which an external hose is inserted and connected, the gasket is pressed against the connection port end by the ring-shaped holding part of the clamp,
A composition characterized in that a locking pawl provided on the outer circumferential tongue of the clamp engages with an engagement groove formed on the case side to maintain the gasket pressed state by the ring-shaped holding portion of the clamp. Gasket fixing structure for resin air cleaner.